CrankShaft

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): FlywheelFabricCommon did not start: java.lang.NoSuchMethodError: 'boolean net.fabricmc.loader.api.FabricLoader.isDevelopmentEnvironment()'; FlywheelFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/server/packs/resources/PreparableReloadListener.

What it needs from Kiln

an access widener
Mixin
com.mojang.blaze3d.buffers.Std140Builder
com.mojang.blaze3d.buffers.Std140SizeCalculator
com.mojang.blaze3d.pipeline.PipelineCache
com.mojang.blaze3d.pipeline.RenderTarget
com.mojang.blaze3d.platform.NativeImage
com.mojang.blaze3d.platform.Window
com.mojang.blaze3d.systems.RenderSystem
com.mojang.blaze3d.systems.RenderSystem.AutoStorageIndexBuffer
com.mojang.blaze3d.systems.SamplerCache
com.mojang.blaze3d.vertex.DefaultVertexFormat
com.mojang.blaze3d.vertex.PoseStack
com.mojang.blaze3d.vertex.PoseStack.Pose
com.mojang.math.Axis
com.mojang.renderpearl.api.GpuFormat
com.mojang.renderpearl.api.GpuFormat.ComponentType
com.mojang.renderpearl.api.buffers.GpuBuffer
com.mojang.renderpearl.api.buffers.GpuBufferSlice
com.mojang.renderpearl.api.commands.CommandEncoder
com.mojang.renderpearl.api.commands.RenderPass
com.mojang.renderpearl.api.commands.RenderPass.Draw
com.mojang.renderpearl.api.commands.RenderPass.RenderArea
com.mojang.renderpearl.api.commands.RenderPass.UniformUploader
com.mojang.renderpearl.api.commands.RenderPassDescriptor
com.mojang.renderpearl.api.commands.RenderPassDescriptor.Builder
com.mojang.renderpearl.api.device.DeviceFeatures
com.mojang.renderpearl.api.device.DeviceInfo
com.mojang.renderpearl.api.device.GpuDevice
com.mojang.renderpearl.api.device.HintsAndWorkarounds
com.mojang.renderpearl.api.pipeline.BindGroupLayout
com.mojang.renderpearl.api.pipeline.BindGroupLayout.Builder
com.mojang.renderpearl.api.pipeline.BindGroupLayout.UniformDescription
com.mojang.renderpearl.api.pipeline.BlendEquation
com.mojang.renderpearl.api.pipeline.BlendFactor
com.mojang.renderpearl.api.pipeline.BlendFunction
com.mojang.renderpearl.api.pipeline.BlendOp
com.mojang.renderpearl.api.pipeline.ColorTargetState
com.mojang.renderpearl.api.pipeline.CompareOp
com.mojang.renderpearl.api.pipeline.CompiledRenderPipeline
com.mojang.renderpearl.api.pipeline.DepthStencilState
com.mojang.renderpearl.api.pipeline.IndexType
and 81 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

An unofficial port of Flywheel

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file crankshaft-fabric-1.6.1+mc26.3.jar. The scan reads the mod's classes; it does not run them.

Reports from players

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